The purpose of this work is to reduce the number of defective burners in a small metal-mechanic company. For this purpose, the implementation of continuous improvement tools was used, making use of Lean Manufacturing. In particular, the 5S methodology was applied to promote order and cleanliness in the production area, while SMED was used to shorten changeover times between processes. The proposal was validated through two approaches: a one-month pilot test to evaluate the application of 5S, and a simulation with Arena software to analyze the impact of SMED. Overall, the adopted strategy emerges as an effective and adaptable option for organizations seeking to minimize waste, raise the quality of the final product and optimize their production performance.